Dust remover



I June 27, 1944-. LESSARD ET AL 2,352,276

DUST REM-OVER- Filed June :5, 1945 jzallzas'las'sara M'Z/z'apzflmza Patented June 27, 1944 UNITED STATES PATENT OFFICE DUST REMOVER Thomas Lossard,

Eaglesham,

Alberta, and

William Mund, Wanham, Alberta, Canada Application June 3, 1943, Serial No. 489,513

2 Claims.

duit. Considerable dust is'generated in this area, with the usual attendant inconvenience and danger of explosion.

The invention includes an auxiliary conduit or conductor extending from this area; and it has been found that this auxiliary conduit provides an effective relief for the dust. The conduit is preferably extended and connected with the delivery conduit at a point remote from the elevator head, where the suction in the delivery line aids in withdrawing the dust.

An illustrative embodiment of the invention is disclosed in the following description and in the accompanying drawing, in which:

Figure 1 is a side elevation, partly in section, of an elevator constructed according to the invention;

Figure 2 is a detail thereof;

Figure 3 is a section on the line 3-3 of Figure 2, and

Figure 4 is a detail front elevation.

The invention will now be described in detail by reference to the drawing by means of reference characters to identify corresponding parts.

In Figure 1 the numeral is applied to a plurality of legs or props supporting an enclosure 2 constituting the head of the elevator. In the head is journaled a shaft 3 carrying a wheel 4 over which is passed an endless bucket conveyor 5 passing down through the legs to a mass of grain. Inasmuch as this structure is conventional, a more detailed showing is not deemed necessary.

From the bottom of the head 2 is extended a distributing spout 6 sloping downward to a platform 1 and supported by a suitable prop 8. A direct spout 9 leads from the distributing spout 6, beneath the platform, and is adapted for loading grain into cars or vessels in the usual manner.

The grain is dropped from the bucket conveyor 5 upon inclined aprons ID from which it flows into the spout 6. Considerable .dust is raised in this area, to the inconvenience of the operators and others in the vicinity of the elevator and contributing to the danger of dust explosion.

To overcome these difficulties, the forward wall or face ll of the head 2 has a portion I2 sloped inwardly to form a horizontal opening l3 adjacent to the aprons I0. Into this opening is fitted a funnel l4 extending outward from the face II, as shown more clearly in Figure 2. A conductor pipe I5 of wood, metal or other suitable material connects into the main con duit 6, 9 at a suitable point, preferably below the platform 1.

In the operation of the device, the mass of dust generated at the aprons I0 is relieved into the opening l3 and funnel l4 and delivered by the conductor pipe l5 into the direct spout 9. This action may be attributed, although not necessarily, to the suction of the principal mass of grain flowing downward in the conduits 6 and 9. If desired, a separate conduit may be provided for drawing off the dust from the conductor pipe l5. In either case the interior of the elevator is effectively relieved of dust. Conductor pipe l5, in order to be adjusted to different types of elevators, may be made of several telescoping parts.

Various modifications of the described details of construction may be made without departing from the scope of the invention as expressed by the annexed claims.

What we claim as our invention is:

1. In an elevator having a head, means for delivering grain to said head, a delivery conduit extending downwardly from said head at a point adjacent to a wall of said head, said wall having an inwardly sloped portion forming a horizontal opening, and a dust conductor extending from said opening, said conductor extending downwardly from said head and communicating with said conduit at an acute angle at a point remote from said head, the vertex of said angle being disposed away from said head and in the direc tion of flow in said conduit.

2. In an elevator having a head, means for deliveringgrain to said head, a delivery conduit extending downwardly from said head at a point adjacent to a wall of said head, said wall having an inwardly sloped portion forming a horizontal opening, a funnel fitted to said opening and a dust conductor extending from said funnel, said conductor extending downwardly from said head and communicating with said conduit at an acute angle at a point remote from said head, the vertex of said angle being disposed away from said head and in the direction of flow in said conduit.

THOMAS LESSARD. WILLIAM MUND. 

